The Sumario Compendioso was published
in Mexico City
in 1556 by a friar, Juan Diez freyle.
The printing press and paper were shipped from Spain and
then carried to
the high inland altitudes of Mexico City.
The only four known surviving copies are treasures of
Huntington Library, San Marino, CA, the
British Library, London, the
Duke University Library, and the
University of Salamanca in Spain.
On June 6, 1985 a facsimile copy was printed on the
occasion of an official visit
by the President of Mexico to Madrid.
We therefore celebrate the Sumario's birthday on June 6.